Engineering:Lapworth 24

From HandWiki
Short description: Sailboat class
Lapworth 24
Development
DesignerBill Lapworth
LocationUnited States
Year1958
Builder(s)Continental Plastics
RoleCruiser
Boat
Boat weight4,350 lb (1,973 kg)
Draft4.00 ft (1.22 m)
Hull
Typemonohull
Constructionfiberglass
LOA24.00 ft (7.32 m)
LWL20.00 ft (6.10 m)
Beam7.50 ft (2.29 m)
Engine typeoutboard motor or inboard motor
Hull appendages
Keel/board typemodified long keel
Ballast1,650 lb (748 kg)
Rudder(s)keel-mounted rudder
Rig
Rig typeBermuda rig
I (foretriangle height)24.50 ft (7.47 m)
J (foretriangle base)9.00 ft (2.74 m)
P (mainsail luff)30.50 ft (9.30 m)
E (mainsail foot)12.00 ft (3.66 m)
Sails
Sailplanfractional rigged sloop
Mainsail area183.00 sq ft (17.001 m2)
Jib/genoa area110.25 sq ft (10.243 m2)
Total sail area293.25 sq ft (27.244 m2)
Racing
PHRF249

The Lapworth 24, sometimes called an L24, is an American trailerable sailboat that was designed by Bill Lapworth as a cruiser and first built in 1958.[1][2][3]

The Lapworth 24 design was developed into the flush-deck Gladiator 24 in 1958. The Spartan 24 was developed from the same design as an economy model.[1][3][4]

Production

The design was built by Continental Plastics in Costa Mesa, California, United States , starting in 1958, but is now out of production.[1][3][5]

Design

The Lapworth 24 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, a spooned raked stem, an angled transom, a keel-mounted rudder controlled by a tiller and a fixed modified long keel, with a cut-away forefoot. It displaces 4,350 lb (1,973 kg) and carries 1,650 lb (748 kg) of lead ballast.[1][3]

The boat has a draft of 4.00 ft (1.22 m) with the standard keel.[1][3]

The boat is normally fitted with a small 4 to 9 hp (3 to 7 kW) outboard motor or inboard motor for docking and maneuvering.[1][3]

The design has sleeping accommodation for four people, with a double "V"-berth in the bow cabin and a two straight settee quarter berths in the main cabin. The galley is located on the both sides just forward of the companionway ladder. The galley is equipped with a two-burner stove and a sink to starboard and an icebox to port. A navigation station is on the port side, on top of the ice box. The head is located centered in the bow cabin. Cabin headroom is 60 in (152 cm) and the fresh water tank has a capacity of 10 U.S. gallons (38 L; 8.3 imp gal).[1][3]

The design has a PHRF racing average handicap of 249 and a hull speed of 6.0 kn (11.1 km/h).[3]

Operational history

Sixteen year old Robin Lee Graham sailed a used Lapworth 24, named Dove west from California in July 1965, reaching Saint Thomas, U.S. Virgin Islands in November 1968 before switching to a Luders 33 to complete the circumnavigation in 1970. His adventures became regular features in National Geographic Magazine and Graham later wrote a bestselling book about the voyage, entitled Dove.[3][6]

In a 2010 review Steve Henkel wrote, "best features: The comparatively long deep keel on the L24 (and the Gladiator 24) versus her comp[etitor]s provides considerable directional stability (ie., ability to keep sailing in one direction without needing to correct the course using the helm or sail trim). Worst features: Like all her comps except one, the L24's draft is too deep for convenient trailer-sailing."[3]

See also

Related development

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 McArthur, Bruce (2020). "Lapworth 24 sailboat". sailboatdata.com. https://sailboatdata.com/sailboat/lapworth-24. 
  2. McArthur, Bruce (2021). "C. William Lapworth 1919 - 2006". sailboatdata.com. https://sailboatdata.com/designer/lapworth-c-william. 
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Henkel, Steve: The Sailor's Book of Small Cruising Sailboats, page 296. International Marine/McGraw-Hill, 2010. ISBN:978-0-07-163652-0
  4. McArthur, Bruce (2020). "Gladiator 24 sailboat". sailboatdata.com. https://sailboatdata.com/sailboat/gladiator-24. 
  5. McArthur, Bruce (2021). "Continental Plastics Inc. (USA)". sailboatdata.com. https://sailboatdata.com/builder/continental-plastics-inc-usa. 
  6. Day, George (23 January 2015). "Great Voyages in Small Boats". Bluewater Sailing. https://www.bwsailing.com/great-voyages-in-small-boats/.